model ar2 wiring harness
TRANSCRIPT
Model AR2
Wiring Harness
WIRING HARNESS ASSEMBLY
2
BILL OF MATERIALS
www.omc-stepperonline.com All Stepper motors, drivers and power supplies are available at:
3
4
5
(you will need 2 packs of 10 aviation plugs)
6
(Make sure you buy high quality non roller switch for J6 – note the rivet hinge pin)
7
You will need 1 limit switch tip
For J6, this part must be 3D printed.
The print file can be found on
The project page with all the other
3D print files.
SECTION 1
FEMALE 4 PIN JST CONNECTOR FOR
MOTOR END OF WIRING HARNESS
8
NOTE THAT THE GAP ON THE PIN
INSULATION WINGS IS TYPICALLY TOO
WIDE OR TOO OPEN.
BEND AND BREAK OFF FEMALE PIN
FROM STRIP.
THE GAP SHOULD NOW LOOK LIKE
THIS.
USE NEEDLE NOSE PLIERS TO CLOSE THE
GAP AS SHOWN
STRIP END LEAVING APPROX 3mm OF
WIRE EXPOSED ON ALL 4 WIRES.
PLACE END OF RIBBON WIRE IN SELF
ADJUSTING WIRE STRIPPERS AS SHOWN.
NOTE THE LIP OR STEP IN THE UPPER
JAW OF THE CRIMPING TOOL.
USE CUTTERS OR RAZOR KNIFE TO
SEPARATE WIRES.
CLOSE THE CRIMPER SLOWLY INTIL THE
RATCHET MECHANISM CLICKS 3 TIMES
BUT DO NOT FULLY CLAMP. IT SHOULD
LOOK LIKE THIS.
WITH CRIMPING TOOL UPSIDE DOWN
IN YOUR LEFT HAND PLACE THE FEMALE
PIN INTO THE JAW WITH YOUR RIGHT
HAND AS SHOWN. THE WINGS
SHOULD BE UP AGAINST THE STEP
SHOWN IN THE PREVIOUS STEP..
THIS PICTURE SHOWS WHERE THE WIRE
SHOULD BE SITTING INSIDE THE PIN.
NOTE THE JACKET IS JUST PAST THE
LARGE WINGS AND THE WIRE ITESELF IS
INSIDE THE SMALLER SET OF WINGS.
IT WILL TAKE PRACTICE TO GET A FEEL
FOR HOW TO INSERT THE WIRE INTO
THE CRIMPER TO GET THIS ALIGNMENT.
FLIP THE CRIMPER BACK RIGHT SIDE UP
AND HOLD WITH YOUR RIGHT HAND,
THEN STARTING WITH THE BLUE WIRE
AS SHOWN – INSERT THE WIRE INTO
THE CRIMPER AND PIN.
THIS PICTURE SHOWS HOW IT SHOULD
LOOK AFTER BEING CRIMPED.
NOTE THE JACKET IS FULLY CLAMPED
BY THE LARGE WINGS BUT THE JACKET
STOPS RIGHT AT THE SMALLER WINGS
AND THE SMALLER WINGS HAVE
CLAMPED ONLY THE METAL WIRE.
I SUGGEST PRACTICING THIS SEVERAL
TIMES TO GET THE HANG OF IT BEFORE
TRYING TO MAKE YOUR WIRING
HARNESS.
WITH THE WIRE AT THE CORRECT
DEPTH COMPETEY CLAMP THE CRIMPER.
THIS PICTURE ALSO SHOWS AN
INCORRECTLY CRIMPED
CONNECTOR.
NOTE THE WIRE WAS INSERTED
TOO FAR AND THE JACKET IS
CLAMPED BY BOTH THE LARGE
AND SMALL WINGS.
THIS IS NOT ACCEPTABLE – IF IT
LOOKS LIKE THIS YOU NEED TO RE-
DO IT..
THIS PICTURE SHOWS AN
INCORRECTLY CRIMPED
CONNECTOR.
NOTE THE JACKET IS NOT FULLY
INSIDE OR CLAMPED BY THE
WINGS.
THIS IS NOT ACCEPTABLE – IF IT
LOOKS LIKE THIS YOU NEED TO RE-
DO IT.
CUT A LENGTH OF HEAT SHRINK
TUBING APPROX 25mm LONG AND RUN
WIRES THROUGH IT AS SHOWN.
ONCE YOU HAVE MASTERED CRIMPING
CONTINUE CRIMPING A PIN ON ALL 4
WIRES AS SHOWN.
PINCH EACH CONNECTOR IN YOUR
FINGERS AND TUG ON IT TO MAKE
SURE IT DOESN’T COME OFF EASILY. IF
IT COMES OFF IT OBVIOSLY NEEDS TO
BE REDONE AND WASN’T FULLY
CRIMPED.
START TO FEED WIRES INTO FEMALE
HOUSING AS SHOWN.
USE A RAZOR BLADE TO MAKE SURE
THE TANGS ON EACH PIN ARE POINTED
OUT.
SOMETIMES THEY GET FLATTENED AND
WILL NOT LATCH INTO THE PLASTIC
HOUSING.
APPLY BLACK SILICONE AROUND THE
BASE OF THE CONNECTOR ON BOTH
SIDES AS SHOWN.
CONTINUE TO FULLY INSERT WIRES
INTO HOUSING.
NOTE THE TANGS ARE FULLY INSERTED
INTO THE SLOTS AND DO NOT PULL
BACK OUT
NOTE WITH THE SLOTS FACING YOU
THE BLUE WIRE IS ON TOP, THEN RED,
GREEN AND BLACK ON THE BOTTOM.
IT IS IMPORTANT THEY ARE INSERTED IN
THIS ORDER.
AFTER WORKING SILICONE INTO
CONNECTOR SPREAD IT A SHORT WAY
DOWN THE WIRES – IT SHOULD LOOK
LIKE THE PICTURE.
USE A TOOTHPICK TO WORK SILICONE
INTO EACH JACKET ON BOTH SIDES.
USE A HEAT GUN TO SHRINK THE
TUBING AS SHOWN.
THIS CONNECTOR IS NOW COMPLETE
SLIDE THE LENGTH OF HEAT SHRINK
TUBING OVER THE CONNECTOR AS
SHOWN.
SECTION 2
FEMALE 3 PIN JST CONNECTOR FOR LIMIT SWITCH END OF WIRING HARNESS
22
INSERT WIRES WITH FEMALE PINS INTO
THE 3 PIN FEMALE JST HOUSING AS
SHOWN.
NOTE WITH THE SLOTS FACING YOU
THE RED WIRE IS ON TOP, THEN GREEN
AND BLACK ON THE BOTTOM. IT IS
IMPORTANT THEY ARE INSERTED IN THIS
ORDER.
REMOVE THE BLUE STRAND FROM THE
RIBBON WIRE AS THIS CONNECTOR
ONLY REQUIRES 3 WIRES.
CRIMP FEMALE PINS TO THE ENDS OF
EACH OF THE WIRES STARTING WITH
THE RED WIRE AS SHOWN – REFER TO
INSTRUCTIONS IN SECTION 1 FOR
CRIMPING DETAILS.
APPLY SILICONE AND HEAT SHRINK
TUBING AS OUTLINED IN SECTION 1.
THIS CONNECTOR IS NOW COMPLETE.
SECTION 3
MALE 3 PIN JST CONNECTOR LIMIT
SWITCH PIGTAILS
25
NOTE THE LIMIT SWITCH FOR AXIS 6
USES A STRAIGH ARM LIMIT SWITCH
WITH THE J6 LIMIT SWITCH TIP
ATTACHED.
LIGHTLY SAND END OF LIMIT SWICH
ARM ON BOTH SIDES AND THEN USE
EPOXY TO SECURE J6 LIMIT SWITCH TIP
TO ARM OF SWITCH.
.STL PRINT FILE FOR THIS TIP CAN BE
FOUND ON PROJECT PAGE INCLUDED
WITH THE OTHER PRINT FILES FOR THE
COMPLETE PRINTED ROBOT.
CONNECT BLACK, RED AND GREY 22
AWG QUICK DISCONNECT WIRES TO
EACH LIMIT SWITCHES FOR ALL 6 AXIS.
NOTE: J1 THROUGH J5 WILL USE THE
ROLLER LIMIT SWICH SHOWN. J6 WILL
USE A STRAIGH ARM WITH TIP
EXTENSION SHOWN IN THE NEXT
STEP.
27
Cut quick disconnect wires to length for each switch as shown below
INSERT WIRES INTO MALE JST HOUSING
AS SHOWN – WITH CLIP FACING
FORWARD INSERT RED WIRE ON TOP,
GREY IN THE MIDDLE AND BLACK ON
THE BOTTOM.
CRIMP JST MALE PINS TO RED, GREY
AND BLACK WIRES IN THE EXACT SAME
PROCEEDURE OUTLINED IN SECTION 1
FOR ALL 6 LIMIT SWITCHES.
PLACE SILICONE AROUND WIRES AT
BASE OF JST HOUSING AND WORK
SILICONE INTO REAR OF CONNECTOR
IN THE SAME WAY SHOWN IN SECTION
1.
INSERT PINS UNTIL THEY ARE FULLY
SEATED AND CLICK INTO THE
HOUSING.
PLACE SHORT LENGTH OF HEAT
SHRINK TUBE OVER WIRES AND ONTO
JST CONNECTOR AS SHOWN.
WRAP WIRES WITH 4mm SPIRAL WRAP –
MAKE SURE SPIRAL WRAP EMBEDS INTO
SILICONE BEFORE IT CURES.
AFTER ALL 6 LIMIT SWITCH PIGTAILS ARE
COMPLETE USE PAINT PENS TO MARK
THE CONNECTORS AS SHOWN ON THE
NEXT PAGE
USE HEAT GUN TO SHRINK TUBING
AROUND CONNECTOR AND WIRES.
32
MARK CONNECTORS AS SHOWN
SECTION 4
MALE 4 PIN JST CONNECTOR ON
MOTOR PIGTAILS
33
34
CUT MOTOR WIRES TO THE FOLLOWING LENGTHS
SLIDE SHORT LENGTH OF HEAT SHRINK
TUBE OVER WIRES.
CRIP MALE JST PINS AS OUTLINED IN
SECTION 1TO EACH WIRE ON ALL 6
MOTORS.
INSERT WIRES INTO MALE JST HOUSING
AS SHOWN. – MAKE SURE THEY FULLY
CLICK INTO PLACE.
MAKE SURE WITH THE CLIP FACING YOU
THAT THE BLUE WIRE IS ON THE LEFT,
THEN THE RED, GREEN, AND BLACK ON
THE RIGHT.
NOTE: THE MOTORS FOR J5 AND J6
HAVE DIFFERENT WIRE COLORS, SEE
ELECTRICAL SCHEMATIC FOR CORRECT
COLOR ORDER.
WRAP 4mm SPIRAL WRAP AROUND
WIRES AND SLIDE UNDER HEAT SHRINK
WRAP AS ITS WRAPPED.
J5 motor J6 motor
FINSIH WRAPPING SPRIRAL WRAP INTIL
WRAP IS EMBEDDED INTO SILICONE..
APPLY BLACK SILICONE TO WIRES AND
CONNECTOR – WORK SILICONE INTO
BACK OF CONNECTOR WITH TOOTH
PICK.
USE HEAT GUN TO SHRINK TUBING AS
SHOWN.
SLIDE HEAT SHRINK TUBE OVER
CONNECTOR AS SHOWN.
APPLY BLACK SILICONE TO THE BASE OF EACH PIGTAIL.
40
MARK EACH CONNECTOR WITH PAINT PENS AS SHOWN
SECTION 5
WIRING HARNESS ASSEMBLY
41
42
CUT 6 LENTHS OF 4-STRAND
RIBBON WIRE TO THE
FOLLOWING LENTHS:
J1- WIRE = 40.6cm (16”) LONG
J2- WIRE = 71cm (28”) LONG
J3- WIRE = 71cm (28”) LONG
J4- WIRE =86.3cm (34”) LONG
J5- WIRE = 86.3cm (34”) LONG
J6- WIRE = 132cm (52”) LONG
CONNECT 4 PIN FEMALE JST
CONNECTOR TO ONE END OF EACH
WIRE AS OUTLINED IN SECTION 1.
Use paint pens to mark each end
of the motor wires as shown:
45
CUT 6 LENTHS OF
STRANDED RIBBON WIRE TO
THE FOLLOWING LENTHS –
STRIP OFF THE BLUE WIRE
FROM EACH SO THAT YOU
HAVE 3 STRAND WIRES (RED,
GREEN, BLACK):
J1- WIRE = 71cm (16”) LONG
J2- WIRE = 58.4cm (23”) LONG
J3- WIRE = 86.4cm (34”) LONG
J4- WIRE =86.4cm (34”) LONG
J5- WIRE = 132cm (52”) LONG
J6- WIRE = 132cm (52”) LONG
THES 6 WIRES WILL BE FOR THE
LIMIT SWITCHES.
STRIP 6mmTO 8mm FROM THE OTHER
END OF THE LIMIT SWITCH WIRES
INSTALL 3 PIN FEMALE JST CONNECTOR
AS OUTLINED IN SECTION 2 ON THE
END OF EACH OF THE 6 LIMIT SWITCH
WIRES.
USE RED PAINT PEN TO MARK THE J3
LIMIT SWITCH WIRE AT BOTH ENDS AS
SHOWN.
USE BLUE PAINT PEN TO MARK THE J2
LIMIT SWITCH WIRE AT BOTH ENDS AS
SHOWN.
NOTE: AS BEFORE THE J1 WIRE DOES NOT
NEED TO BE MARKED.
USE WHITE PAINT PEN TO MARK THE J5
LIMIT SWITCH WIRE AT BOTH ENDS AS
SHOWN.
NOTE: AS BEFORE THE J6 WIRE DOES NOT
NEED TO BE MARKED.
USE YELLOW PAINT PEN TO MARK THE
J4 LIMIT SWITCH WIRE AT BOTH ENDS
AS SHOWN.
PULL ALL MOTOR AND LIMIT SWITCH
WIRE ENDS THROUGH PG16 GLAND
NUT AS SHOWN
USE STEPPED BIT TO DRILL 7/8” HOLE IN
END OF PROJECT BOX.
PULL LIMIT SWITCH WIRES FAR
ENOUGH OUT OF BOX TO GIVE
YOURSELF SOME ROOM TO WORK. ON
THE STRIPPED END OF LIMIT SWITCH
WIRES – SEPARATE THE WIRE STRANDS
THEN TWIST ALL THE RED WIRES
TOGETHER AND THEN TWIST ALL THE
BLACK WIRES TOGETHER.
INSTALL WIRE LOOM AND GLAND NUT
INTO PROJECT BOX AS SHOWN.
CUT OFF MALE END OF RJ45
EXTENSION WIRE AND STRIP OFF
OUTER SHEETHING AS SHOWN.
SLIP 2.5cm (1”) LENGTH OF 6mm HEAT
SHRINK TUBING OVER RED AND BLACK
WIRE BUNDLES.
SLIP 2.5cm (1”) LENGTH OF 2mm HEAT
SHRINK TUBING OVER EACH OF THE
GREEN WIRES.
SOLDER BROWN WIRE FROM RJ45 TO
THE GROUP OF RED WIRES AS SHOWN.
THE FOLLOWING STEPS WILL CONNECT THE GREEN LIMIT SWITCH WIRES TO THE CORRECT RJ45 WIRES.
THE IMAGE TO THE LEFT SHOWS THE COLOR CODE FOR WHICH RJ45 WIRE GOES TO WHICH LIMIT SWITCH
J1 = WHITE / ORANGE STRIPE
J2 = ORANGE / WHITE STRIPE
J3 = WHITE / GREEN STRIPE
J4 = BLUE / WHITE STRIPE
J5 = WHITE / BLUE STRIPE
J6 = GREEN / WHITE STRIPE
COMMON NEGATIVE = WHITE / BROWN STRIPE.
COMMON POSITIVE = BROWN / WHITE STRIPE.
SOLDER WHITE / BROWN STRIPE WIRE
TO THE GROUP OF BLACK WIRES.
SLIDE HEAT SHRINK TUBE OVER SOLDER
JOINT AND USE HEAT GUN TO SHRINK
TUBE.
TRACE UNPAINTED GREEN WIRE FROM
SHORT J1 LIMIT SWITCH WIRE AND
SOLDER TO THE WHITE / ORANGE
STRIPE WIRE.
THEN SLIDE HEAT SHRINK TUBE OVER
SOLDER JOINT AND SHRINK WITH
HEAT GUN.
SLIDE HEAT SHRINK TUBE OVER SOLDER
JOINT AND USE HEAT GUN TO SHRINK
TUBE.
FIND THE J3 LIMIT SWITCH WIRE
WHICH WAS MARKED WITH RED PAINT
PEN AND SOLDER TO THE WHITE /
GREEN STRIPE WIRE.
THEN SLIDE HEAT SHRINK TUBE OVER
SOLDER JOINT AND SHRINK WITH
HEAT GUN.
FIND THE J2 LIMIT SWITCH WIRE
WHICH WAS MARKED WITH BLUE
PAINT PEN AND SOLDER TO THE
ORANGE / WHITE STRIPE WIRE.
THEN SLIDE HEAT SHRINK TUBE OVER
SOLDER JOINT AND SHRINK WITH
HEAT GUN.
FIND THE J5 LIMIT SWITCH WIRE
WHICH WAS MARKED WITH WHITE
PAINT PEN AND SOLDER TO THE WHITE
/ BLUE STRIPE WIRE.
THEN SLIDE HEAT SHRINK TUBE OVER
SOLDER JOINT AND SHRINK WITH
HEAT GUN.
FIND THE J4 LIMIT SWITCH WIRE
WHICH WAS MARKED WITH YELLOW
PAINT PEN AND SOLDER TO THE BLUE /
WHITE STRIPE WIRE.
THEN SLIDE HEAT SHRINK TUBE OVER
SOLDER JOINT AND SHRINK WITH
HEAT GUN.
SLIDE THE LARGE 10mm HEAT SHRINK
TUBE OVER THE ENTIRE BUNDLE OF
JOINTS AND USE HEAT SHRINK GUN TO
SHRINK TUBING.
FIND THE REMAINING J6 LIMIT SWITCH
WIRE WHICH WAS NOT MARKED AND
SOLDER TO THE GREEN / WHITE STRIPE
WIRE.
THEN SLIDE HEAT SHRINK TUBE OVER
SOLDER JOINT AND SHRINK WITH
HEAT GUN.
Use drill bit and rotary tool bit to create a
square hole at end opposite the 6 holes as
shown. Hole should be 7/8” x 3/4” to
accept the RJ45 panel mount plug.
USE STEPPED BIT TO DRILL (x6) 5/8”
diameter holes evenly spaced as shown.
Holes are 7/8” from edges and 1” apart.
Solder the J1 motor wires to the back side
of aviation plug as shown.
Looking at the back of the connector solder
the black wire to upper left , green wire
upper right, red wire to lower left and the
blue wire to lower right.
Install (x6) male side 4pin aviation plugs and
(x1) RJ45 panel mount jack as shown in
project box cover.
Install RJ45 plug into panel socket.
Solder the remaining motor wires to aviation
plugs as shown.
Work10mm wire wrap under gland nut and
into gland.
Carefully pull wire slack out and install cover
on project box.
Use digital multi meter to test continuity on
every pin of every motor wire and every
limit switch wire.
Tighten gland nut.
IF YOU WILL BE USING A PNEUMATIC GRIPPER LAY PNEUMATIC LINES ALONG WITH
WIRE BUNDLES. THE PNEUMATIC LINES CAN BE AS LONG AS YOU WANT BUT MAKE
SURE THE PNEUMATIC LINES EXTEND APPROX 8” PAST THE J6 CONNECTORS AT THE
VERY END OF THE HARNESS.
WRAP BUNDLE WITH 10mm SPIRAL WRAP AS SHOWN – WHEN YOU ARE 15.25cm (6”)
FROM END OF ENCLOSURE PULL THE J1 MOTOR AND LIMIT WIRES OUT OF THE
BUNDLE.
CONTINUE WRAPPING SPIRAL WRAP PAST THE SPOT WHERE THE J1 WIRES EXIT THE
WRAP – THEN ATTACH A MOUNTING CABLE TIE AS SHOWN.
CONTINUE WRAPING BUNDLE WITH SPIRAL WRAP – WHEN YOU ARE 40.5cm (16”) FROM
ATX CONNECTOR PULL THE J2 MOTOR AND LIMIT WIRES AS WELL AS THE J2 MOTOR
OUT OF THE WRAP AS SHOWN.
CONTINUE WRAPPING BUNDLE WITH SPIRAL WRAP – WHEN YOU GET JUST PAST 69cm
FROM ATX CONNECTOR BREAK THE J4 AND J5 MOTOR CONNECTORS AND J2 AND J4
LIMIT CONNECTORS OUT OF THE WRAP. THEN PLACE A MOUNTING CABLE TIE 68.5cm
FROM ATX CONNECTOR.
CONTINUE WRAPPING BUNDLE AND PLACE ANOTHER MOUNTING CABLE TIE 15.25cm
(6”) FROM PREVIOIUS CABLE TIE.
CONTINUE WRAPPING SPIRAL WRAP ALL THE WAY TO THE J6 CONNECTORS AS
SHOWN. INSTALL MOUNTING CABLE TIE AT END OF SPIRAL WRAP AS SHOWN.
GO BACK TO THE J2 & 3 MOTOR AND LIMIT WIRES THAT EXIT THE LOOM AND WRAP
THEM IN SPIRAL WRAP AND THEN WRAP THE JOINT WITH ELECTRICAL TAPE AS
SHOWN.
67
WIRING HARNESS IS NOW COMPLETE
SECTION 6
WIRING HARNESS INSTALLATION
68
SECURE THE HARNESS TO THE J2 ARM
USING M4 SCREWS THROUGH THE
CABLE TIE MOUNTS AS SHOWN.
SECURE HARNESS TO BASEPLATE USING
M4 SCREW ANDTHEN CONNECT THE J1
MOTOR AND LIMIT SWITCH
CONNECTORS.
CONNECT THE J2 & J3 MOTOR
CONNECTORS AND THE J2 LIMIT
SWITCH CONNECTOR AS SHOWN.
ROUTE THE J2 & J3 MOTOR AND LIMIT
SWITCH WIRES THROUGH THE CENTER
OF ROBOT AND THEN SECURE TO THE
J2 MOTOR SUPPORT PLATE USING A
STANDARD CABLE TIE THROUGH THE
SIDE HOLE AS SHOWN.
THE CABLE TIE SHOULD REMAIN LOOSE
AROUND THE WIRES – JUST TIGHT
ENOUGH SO THE CONNECTORS CANT
SLIP THROUGH THE TIE AND THE WIRES
CANT SWING INTO THE J2 LIMIT
SWITCH.
SECURE THE END OF THE HARNESS TO
THE J5 SUPPORT ARM AS SHOWN USING
A M4 SCREW AND THEN CONNECT THE
J5 & J6 CONNECTORS AS WELL AS THE
PNEUMATIC GRIPPER TUBES.
THIS CONCLUDES THE WIRING
HARNESS MANUAL – PLEASE VISIT
THE PROJECT PAGE AND REVIEW
THE VIDEO ON STARTUP AND
CALIBRATION.
CONNECT THE J4 & J5 MOTOR AND
LIMIT SWITCH CONNECTORS AS
SHOWN.
SECTION 7
MOTOR CABLES
72
Strip 10mm of outer sheathing off each end
of cable.
You will need to make 6 cables for the robot
and a 7th if you are building a travel track.
Cut each cable to whatever length you need
– in this example I have cut each cable to 6’
long.
Pre apply solder to each contact on
connector.
Strip 5mm sheathing off each wire and then
tin each wire with solder as shown.
Cables are “straight through” -
solder wires on each end of cable
mirror image to the other as
shown in the sketch and photo
shown.
Solder wires to each contact on connector –
see following steps for wire position.
Slide connector housing over connector and
install screw.
Wrap electrical tape around solder joints to
prevent any potential short on connector
housing.
Repeat this process for each cable needed.
Tighten screws on wire clamp.